Some reflections on the faurnal remains of the Roman castellum Valkenburg, excavation 1962 - Waterbolk, H.T; Bottema, S (Archaeozoological studies /Ed. by A.T. Clason, 1975)
Watebolk, H.T.: Evidence of cattle stalling in excavated pre-and protohistoric houses ; Bottema, S.: The use of gastroliths in archaeology